How did ancient Romans feel about slavery?

theres no real answer, but it was a combination of Christianity in rome (since slavery was abbolished in 1st and 2nd centuries BC) which taught the value and compassion towards fellow man, the 3 servile war (the 3rd and largest of which was led by spartacus, crixus and oenamaeus freeing and recruiting 70,000 slaves) and fall of the republic because of a collapse of the economy due to larger, wealthier slaveowner landowners holding a monopoly in agriculture and keeping smaller countryside farms to profit from their crops because of cheap manual slave labor. slavery was officially abolished in southern Italy (not too sure on the rest of Europe) in 189A.D.